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Clean up platform conditionals.

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Thanks Jordan!

Swift SVN r23235
This commit is contained in:
Joe Groff
2014-11-11 17:05:56 +00:00
parent 3460ec2487
commit 2475bd1e4f
1 changed files with 4 additions and 2 deletions
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6
include/swift/Runtime/Metadata.h
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@@ -1369,14 +1369,16 @@ struct ForeignTypeMetadata : public Metadata {
// enough to eliminate it when it's not needed).
if (!hasInitializationFunction())
return asFullMetadata(this)->Unique.load(std::memory_order_relaxed);
#elif __arm64__
#endif
#if __arm64__
// FIXME: Workaround for rdar://problem/18889711. 'Consume' does not require
// a barrier on ARM64, but LLVM doesn't know that. Although 'relaxed'
// is formally UB by C++11 language rules, we should be OK because neither
// the processor model nor the optimizer can realistically reorder this.
return asFullMetadata(this)->Unique.load(std::memory_order_relaxed);
#endif
#else
return asFullMetadata(this)->Unique.load(std::memory_order_consume);
#endif
}
void setCachedUniqueMetadata(const ForeignTypeMetadata *unique) const {